fix(#2632): remove /api/loose-ends endpoint; drop refreshLooseEnds (address argus/mara review)

Both old endpoints removed. refreshLooseEnds() call sites cleaned up;
lastLooseEnds stays as empty [] for reconcileAskBinds (no-op now that
the loose-ends source is gone).

hive-agent/src/web_ui/mod.rs

@@ -115,7 +115,6 @@ pub async fn serve(
         .route("/api/effort", post(actions::post_set_effort))
         .route("/api/new-session", post(actions::post_new_session))
         .route("/api/logout", post(auth::post_logout))
-        .route("/api/loose-ends", get(stats::api_loose_ends))
         .route("/api/todos", get(stats::api_todos))
         .route("/api/stats", get(stats::api_stats))
         .route("/screen/ws", get(screen::screen_ws))

hive-agent/src/web_ui/stats.rs

@@ -1,11 +1,10 @@
 //! Stats + loose-ends + todos read endpoints.
 
 use axum::extract::State;
-use axum::http::StatusCode;
 use axum::response::{IntoResponse, Response};
 use serde::Deserialize;
 
-use super::{AppState, error_response};
+use super::AppState;
 
 #[derive(Deserialize)]
 pub(super) struct StatsQuery {
@@ -47,35 +46,6 @@ async fn fetch_reminder_stats(
     }
 }
 
-/// Proxy this agent's loose-ends list via the per-agent socket. The
-/// web UI surfaces the result as a collapsible section in the page
-/// so the operator can see at a glance what's pending against the
-/// agent (questions asked by it, peer questions targeting it,
-/// reminders it scheduled, approvals for the manager). Same data
-/// the `mcp__hyperhive__get_loose_ends` tool sees from inside the
-/// container.
-pub(super) async fn api_loose_ends(State(state): State<AppState>) -> Response {
-    match super::broker_request(
-        &state.socket,
-        &hive_core_agent_sock::Request::GetLooseEnds { agent: None },
-    )
-    .await
-    {
-        Ok(hive_core_agent_sock::Response::LooseEnds { loose_ends }) => {
-            axum::Json(serde_json::json!({ "loose_ends": loose_ends })).into_response()
-        }
-        Ok(hive_core_agent_sock::Response::Err { message }) => error_response(
-            StatusCode::INTERNAL_SERVER_ERROR,
-            &format!("get_loose_ends: {message}"),
-        ),
-        Ok(other) => error_response(
-            StatusCode::INTERNAL_SERVER_ERROR,
-            &format!("get_loose_ends: unexpected response: {other:?}"),
-        ),
-        Err(e) => super::broker_error_response(&e, "get_loose_ends"),
-    }
-}
-
 /// `GET /api/todos` — snapshot of this agent's local todos (loose-ends v2).
 ///
 /// Connects to the in-agent harness socket (`HIVE_AGENT_SOCKET`) and calls